The orbital diagram in which both Pauli's exclusion principle and Hund's rule are violated is: 
 

1.    

2.    

3.    

4.    

Subtopic:  Pauli's Exclusion Principle & Hund's Rule |
 68%
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The correct order of the total number of nodes of atomic orbitals is: 

1.  4f > 6s > 5d

2.  6s > 5d > 4f

3.  4f > 5d > 6s

4.  5d > 4f > 6s

Subtopic:  Nodal Plane |
 73%
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Correct statement among the following is: 

1.  Number of angular nodes = n - l - 1

2.  Number of radial nodes = l

3.  Total number of nodes = n -1

4.  All of the above

Subtopic:  Nodal Plane |
 62%
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Orbitals having two spherical nodes are: 

1. 2s 2. 4s
3. 3d 4. 6f
Subtopic:  Nodal Plane |
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The wave mechanical model of the atom depends upon

1.  De-Broglie concept of dual nature of electron

2.  Heisenberg uncertainty principle

3.  Schrodinger's principle

4.  All

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 70%
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The incorrect statement regarding the characteristics of X-rays is :

1. The radiation can ionize the gas

2. It causes a fluorescence effect on ZnS

3. It is deflected by electric and magnetic fields

4. Have a shorter wavelength than ultraviolet rays

Subtopic:  Introduction of Atomic Structure |
 53%
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For any H-like system, the ratio of velocities of I, II & III orbit i.e., V1 : V2 : V3 will be:

1.  1 : 2 : 3

2.  1 : 1/2 : 1/3

3.  3 : 2 : 1

4.  1 : 1 : 1

Subtopic:  Bohr's Theory |
 73%
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In photoelectric effect, the kinetic energy of photoelectrons increases linearly with the:

1.  Wavelength of incident light.

2.  Frequency of incident light.

3.  Velocity of incident light.

4.  Atomic mass of an element.

Subtopic:  Photo Electric Effect |
 84%
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The photoelectric emission from a surface starts only when the light incident upon the surface has a certain minimum:

1. Intensity 2. Wavelength
3. Frequency 4. Velocity
Subtopic:  Photo Electric Effect |
 74%
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The ratio of slopes of Kmax vs. v and V0 vs. v curves in photoelectric effect gives -

(v=frequency, Kmax=maximum kinetic energy, V0 stopping potential):

1.  Charge of electron

2.  Planck's constant

3.  Work function

4.  The ratio of Planck's constant of electronic charge

Subtopic:  Photo Electric Effect |
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